Home / 39,719.20-59,578.80-12,017.20

Finding the Fourth Proportional to 39,719.20, 59,578.80 and 12,017.20

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Solution

The fourth proportional to 39,719.20, 59,578.80 and 12,017.20 is: 18,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,719.20 : 59,578.80 = 12,017.20 : x
  2. Step 2: Convert to fraction form
    39,719.20/59,578.80 = 12,017.20/x
  3. Step 3: Cross multiply
    39,719.20x = 59,578.80 × 12,017.20
  4. Step 4: Simplify right side
    39,719.20x = 715,970,355.36
  5. Step 5: Solve for x
    x = 715,970,355.36/39,719.20
  6. Step 6: Final answer
    x = 18,025.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.